//
// Created by lenovo on 2016/12/19 0019.
/**
 * 题目：输入某年某月某日，判断这一天是这一年的第几天？
 */
//
#include <stdio.h>

int main() {
    //声明年月日，总天数，平年闰年的标识符
    int day, month, year, sum, leap;
    printf("\nplease input date format as :（2015,12,10）\n");
    scanf("%d,%d,%d", &year, &month, &day);  // 格式为：2015,12,10
    switch (month) // 先计算某月以前月份的总天数
    {
        case 1:
            sum = 0;
            break;
        case 2:
            sum = 31;
            break;
        case 3:
            sum = 59;
            break;
        case 4:
            sum = 90;
            break;
        case 5:
            sum = 120;
            break;
        case 6:
            sum = 151;
            break;
        case 7:
            sum = 181;
            break;
        case 8:
            sum = 212;
            break;
        case 9:
            sum = 243;
            break;
        case 10:
            sum = 273;
            break;
        case 11:
            sum = 304;
            break;
        case 12:
            sum = 334;
            break;
        default:
            printf("data error");
            break;
    }
    sum = sum + day; // 再加上某天的天数
    if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {// 判断是不是闰年
        leap = 1;
    } else {
        leap = 0;
    }
    if (leap == 1 && month > 2) { // *如果是闰年且月份大于2,总天数应该加一天
        sum++;
    }
    printf("today is the %d day of this year。", sum);
    printf("\n");
}
